Thersandrus compressus (Desbonne, 1867)

Carmona-Suárez, Carlos & Poupin, Joseph, 2016, Majoidea crabs from Guadeloupe Island, with a documented list of species for the Lesser Antilles (Crustacea, Decapoda, Brachyura, Majoidea), Zoosystema 38 (3), pp. 353-387 : 378

Thersandrus compressus

(Desbonne in Desbonne & Schramm, 1867) ( Fig. 8M )

Sisyphus compressus Desbonne , in Desbonne & Schramm, 1867: 20 (type locality: Guadeloupe). — A. Milne-Edwards 1873-1880: 124 ( Guadeloupe).

Thersandrus compressus – Rathbun 1925: 343 ( Guadeloupe).

MATERIAL EXAMINED. — Guadeloupe. KARUBENTHOS 2012, 1♀ juv. MNHN-IU-2013-5915 (lot JL522), st. GR 14, 27 m.

DIAGNOSIS. — Carapace depressed. Rostral horns small. Antennae and ambulatory legs fringed with long hair.

HABITAT. — A crab mimetic on algae ( Avrainvillea sp.). Collected 27 m, reported previously 3-6 m (2-3 fathoms).

DISTRIBUTION ( Rathbun, 1925). — Western Atlantic. Cuba. Lesser Antilles ICA (St Martin*, Guadeloupe, Martinique **).*St Martin from unpublished fieldwork (UF32558, 26.IV.2012 coll. & photo A. Anker/G. Paulay). ** Martinique from unpublished fieldwork (coll. R. Ferry, Y. Buske, det. J. Poupin XI.2015, BIOSPHERE (n°17) specimen at University of Fort de France).

REMARK

This crab is remarkably flat.

Figures

FIG. 8. — Mithracidae (Windsor & Felder, 2014): A, Nemausa cornuta (Saussure, 1857), 1♂ MNHN-IU-2013-4433, st. GR33, 9 m; B, Nemausa?cornuta, 1 juv. MNHN-IU-2013-6787, st. GD64, 60 m; C, Nemausa acuticornis (Stimpson, 1871), Martinique, 1♂ coll. R. Ferry, n°52 BIOSPHERES Fort de France, XI.2015; D, Omalacantha antillensis (Rathbun, 1920), 1♂ MNHN-IU-2013-4420 (lot JL1499-7), st. GB36, 16 m; E, Omalacantha bicornuta (Latreille, 1825), 1 ♂ MNHN- IU-2013-6622, st. GM10, 1 m; F, Pitho aculeata (Gibbes, 1850), 1 ♀ MNHN-IU-2013-6731, st. GB29, 2 m; G, Pitho?laevigata (or P. lherminieri [Desbonne, in Desbonne & Schramm,1867]),1 ♂ MNHN-IU-2013-4760, st.GM06,1 m;H, Pitho lherminieri, 1♂ MNHN-IU-2013-4536, st.GR50,4 m; I, Pitho mirabilis (Herbst,1794), 1 ♀ juv.MNHN-IU-2013-5949, st. GB36,16 m; J, Teleophrys ruber (Stimpson, 1871), 1 ♂ no MNHN (lot JL125), st. GR03, 6 m; K, Thoe puella Stimpson,1860,1 ♂ MNHN-IU-2013-4256 (lot JL489-5), st. GM09, 1 m. Majidae Samouelle, 1819: L, Temnonotus granulosus A. Milne-Edwards, 1875, 1 ♀ MNHN-IU-2013-4422, no station number,coll. D. Lamy,trap 300 m; M, Thersandrus compressus (Desbonne,in Desbonne & Schramm,1867), 1♀ juv.MNHN-IU-2013-5915, st.GR14,27 m.